There is such a thing:
You could have found all this information in this topic and MUCH MORE, in the topics categorised as: “Resources”, “Teaching” and “Go Videos”
Also, in the website itself there is this:
Books, video, equipment, groups, discords, software, other servers, more sites, other resources, online teaching schools, clubs and organisations.
All those can be found with a couple of clicks. People complain sometimes that OGS UI is not very friendly, but I do not think that it is obscure either:
